If r 1, and m and n are each a multiple of (r + 1)2 + r2, then each isomorphic component of Cm ×Cn admits of a vertex partition into (r + 1)2 + r2 perfect r-dominating sets. The result induces a dense packing of Cm × Cn by means of vertexdisjoint subgraphs, each isomorphic to a diagonal array. Areas of applications include efficient resource placement in a diagonal mesh and error-correcting cod...

1. Rabbit antisera against arginine-vasopressin (AVP) were evaluated for sensitivity and specificity in a radioimmunoassay based on the extraction of AVP from plasma and urine on to Florisil. 2. Comparison of the immunoreactivity of AVP with analogues showed that one antiserum (R2) reacted principally with the hexapeptide ring and another (R4) bound to the tripeptide tail and was reactive with ...

Background and Purpose—Endothelial progenitor cells (EPC) are important participants of neovascularization and are mobilized through signaling with stromal-derived factor (SDF-1 ), vascular endothelial growth factor (VEGF), granulocyte colony-stimulating factor, and stem cell factor. The association between EPC levels and these growth factors (GF) in acute stroke has not been previously establi...

The blink reflex and it's recovery cycle were studied in 26 patients with Gilles de la Tourette syndrome and 10 controls. There was a significant increase in the mean duration of the R2 response. The amplitude of the R2 response following paired shocks (mean R2[T]/R2[C]%) was 11%, 40% and 52% of the conditioning stimulus with intervals of 200 ms, 500 ms and 1 second in the patients, compared wi...

Centroidal Voronoi tessellations (CVTs) are Voronoi tessellations of a region such that the generating points of the tessellations are also the centroids of the corresponding Voronoi regions with respect to a given probability measure. CVT is a fundamental notion that has a wide spectrum of applications in computational science and engineering. In this paper, an algorithm is given to obtain the...

Ribonucleotide reductases provide the only biosynthetic pathway for the generation of deoxyribonuc1eotides.l The Escherichia coli enzyme is a 1 : 1 complex of R1 and R2 proteins;2 the X-ray structure of the latter establishes the presence of two nonheme (p-oxo)diiron(III) clusters in close proximity to Tyr 122,3 which must be oxidized to its radical form to elicit enzyme activity.435 It is the ...

We prove that k-trace operators of SO(6)R irreps with Young tableau partitions {r1, r2, r3}, constructed out of k chiral primaries in the twenty dimensional SO(6)R irrep, lead to quasi primary fields with protected conformal dimensions under certain conditions. If r1, r2, r3 are all even, r1 + r2 + r3 = 2k and the field is a spacetime scalar, then the conformal dimension 2k is unrenormalized. I...